will it be written and performed to sound elderly? that's what'll get you most of the way there.

from an engineering standpoint, to finish:
1. use time compression / expansion to slow down the speech and drop the pitch
2. edit in gaps in certain places to make it halting
3. EQ out any kid-sounding artifacts
4. EQ in any kind of artifacts that heighten the elderly thing (like wheezing)

It's a project for my audio class. We have to just use the human voice and I wanted to do a sort of human life span where the voices of different stages kind of morph into each other. I could record my own voice, but I'm not sure how I could make myself voice sound "elderly". I was going to just try to use one of the voices I have for the adult voice, but I wasn't sure what else I can do besides pitch shifting.

While I'm asking questions, is there a free converter I can download to convert aif and mp3s to wav files?

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